QUILLAYUTE STATE AP, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(456858) QUILLAYUTE WSCMO AP
From Year=1966 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 90 92 126 192 346 461 589 605 502 315 149 80 3545
40 S 90 182 308 500 846 1306 1895 2500 3001 3316 3465 3545 3545
45 M 24 24 33 72 193 311 434 450 352 167 54 21 2133
45 S 24 48 81 153 346 657 1090 1540 1892 2059 2113 2133 2133
50 M 3 3 3 18 73 163 279 295 204 58 11 2 1111
50 S 3 5 9 26 99 262 541 836 1040 1098 1109 1111 1111
55 M 0 0 0 3 19 50 128 142 80 10 0 0 434
55 S 0 0 0 4 23 73 201 344 423 433 434 434 434
60 M 0 0 0 0 5 12 32 37 18 1 0 0 105
60 S 0 0 0 0 5 17 49 86 104 105 105 105 105
Corn Growing Degree Days
50 M 13 25 41 80 156 214 303 319 267 142 38 10 1606
50 S 13 38 79 159 315 529 831 1150 1417 1559 1597 1606 1606
M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu